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diff --git a/canvas/source/tools/surfacerect.hxx b/canvas/source/tools/surfacerect.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_CANVAS_SOURCE_TOOLS_SURFACERECT_HXX
+#define INCLUDED_CANVAS_SOURCE_TOOLS_SURFACERECT_HXX
+
+#include <basegfx/point/b2ipoint.hxx>
+#include <basegfx/vector/b2isize.hxx>
+
+namespace canvas
+{
+    /**
+     * This implements some equivalent to basegfx::B2IBox, but instead of two
+     * BasicBox ranges, it uses a position and a size. maPos and maSize could
+     * be replaced by:
+     * - B2IPoint(getMinX(), getMinY()) and
+     * - B2ISize(getMaxX()-getMinX(), getMaxY()-getMinY())
+     *
+     * The current allocation algorithm uses size and pos a lot. Not sure how
+     * time-critical any of this code is and if that would be a problem.
+     */
+    struct SurfaceRect
+    {
+        ::basegfx::B2IPoint maPos;
+        ::basegfx::B2ISize  maSize;
+
+        explicit SurfaceRect( const ::basegfx::B2ISize &rSize ) :
+            maPos(),
+            maSize(rSize)
+        {
+        }
+
+        bool pointInside( sal_Int32 px, sal_Int32 py ) const
+        {
+            const sal_Int32 x1(maPos.getX());
+            const sal_Int32 y1(maPos.getY());
+            const sal_Int32 x2(x1 + maSize.getX());
+            const sal_Int32 y2(y1 + maSize.getY());
+            if(px  < x1) return false;
+            if(px >= x2) return false;
+            if(py  < y1) return false;
+            if(py >= y2) return false;
+            return true;
+        }
+
+        /// returns true if the passed rect intersects this one.
+        bool intersection( const SurfaceRect& r ) const
+        {
+            const sal_Int32 x1(maPos.getX());
+            const sal_Int32 y1(maPos.getY());
+            const sal_Int32 x1w(x1 + maSize.getX() - 1);
+            const sal_Int32 y1h(y1 + maSize.getY() - 1);
+
+            const sal_Int32 x2(r.maPos.getX());
+            const sal_Int32 y2(r.maPos.getY());
+            const sal_Int32 x2w(x2 + r.maSize.getX() - 1);
+            const sal_Int32 y2h(y2 + r.maSize.getY() - 1);
+
+            return !((x1w < x2) || (x2w < x1) || (y1h < y2) || (y2h < y1));
+        }
+
+        bool inside( const SurfaceRect& r ) const
+        {
+            const sal_Int32 x1(maPos.getX());
+            const sal_Int32 y1(maPos.getY());
+            const sal_Int32 x2(x1 + maSize.getX() - 1);
+            const sal_Int32 y2(y1 + maSize.getY() - 1);
+            if(!(r.pointInside(x1,y1))) return false;
+            if(!(r.pointInside(x2,y2))) return false;
+            return true;
+        }
+    };
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */